*{
	margin:0;
	padding: 0;
	-webkit-tap-highlight-color:transparent;
	box-sizing: border-box;
	-webkit-box-sizing:border-box;

}
body{
	font-size: 14px;
	font-family: "黑体";s
	color: #333;
	min-width: 320px;
	max-width: 640px;
	margin: 0 auto;
}
a{
	color: #333;
	text-decoration: none;
}
a:hover{
	text-decoration: none;
}
input{
	border: none;
	outline: none;
	-webkit-appearance:none;
}
ul,ol{
	list-style: none;
}
/*头部*/
.ys_boss{
	width: 100%;
	max-width: 640px;
	min-width: 320px;
	margin: 0 auto;
	background-color: rgb(238,238,238);

}
.ys_boss>.ys_banner{
	
	height: 44px;
	width: 100%;
	z-index: 1000;
	display: flex;
	align-items: center;
	background-color: black;
	box-shadow: 0px 1px 3px ;
	min-width: 320px;
	max-width: 640px;
	

}
.ys_boss>.ys_banner>a{
	height: 100%;
	width: 45%;
	padding:0px;
	margin:0px;
}
.ys_input1{
	height: 100%;
	width: 100%;
	background-color: rgb(63,68,74);
	color: white;
	font-size: 1.1rem;
	/*position: absolute;*/
	

}
.ys_input2{
	height: 100%;
	width: 100%;
	font-size: 1.1rem;
	background-color: rgb(255,255,255);
	/*position: absolute;*/
	
}
.ys_input3{
	height: 100%;
	width: 90%;
	display: none;
	background-color: white;
	color:black;
	font-size: 1.1rem;
	padding-left: 9px;
}
.ys_img1{
	
	}
.ys_imgx{
	display: none;
}
/*中部*/
.center{
	width: 100%;
	background-color: rgb(248,248,248);

}
.center>.center_img1{
	width: 90%;
	height: 330px;
	margin-left: 20px;
	margin-top: 80px;
}
.center>.center_text1{
	font-size: 1.3rem;
	color:rgb(81,81,81);
	margin-top: 30px;
	text-align:center;
}
.center_text2{
	font-size: 0.9rem;
	color:rgb(119,119,119);
	margin-top: 30px;
	margin-left: 20px;
}

.center_nav{
	display: flex;
	flex-direction: column;
	border-bottom: 1px solid #e0e0e0;
	background-color: white;
}
.center_nav>.center_nav1{
	display: flex;
	justify-content: space-around;
	margin-top:10px;
	margin-bottom: 10px;
}
.center_nav>.center_nav1>.center_nav_friends{
	margin: 0 auto;
	width: 40%;
}
.center_nav>.center_nav1>.center_nav_friends>img{
	width: 100%;
	height: 200px;
	margin: 0 auto;
}
.center_nav>.center_nav1>.center_nav_friends>div>p{
	color: rgb(60,148,139);
	font-size: 1.3rem;
}
.top{
	margin:auto;
	border:1px solid silver;
	height: 40px;
	width: 50px;
	text-align: center;
	line-height: 40px;
	font-size: 1.3rem;
}
/*尾部*/
.footer{
	width: 90%;
	height:60px;
	background-color: rgb(221,221,221);
	position: fixed;
	bottom:1%;
	z-index: 1000;
	display: flex;
	align-items: center;
	border-radius: 8px;
	margin-left: 20px;
	min-width: 320px;
	max-width: 640px;
	
}
.footer>img{
	width: 55px;
	height: 55px;
	border-radius: 10px;

}
.footer>div{
	margin-left: 20px;
	font-size: 1.2rem;
}
.footer>a{
	width: 96px;
	height: 29px;
	border-radius: 8px;
	border:1px solid black;
	margin-left: 30px;
}
.footer>a>input{
	height: 100%;
	width: 100%;

}